I think they had been playing netball but they do that all the time with no such effects and remember it took 2 days for the marks to appear on g.d's second arm, during which she had been hanging round hospital not outside at all.
Well, the second dr. in the children's ward disagreed with the dermatologist (who had said horsefly or hornet bite) , didn't she? I'm keeping an open mind but I agree that it looks like bruising rather than inflammation. Alarmingly, there was an article in Sun. Times y'day saying that diagnosis is very poor and quite a few kids die as a result of failure to diagnose e.g. meningitis, asthma etc. Having diagnosed my husband's sacral cancer after being told all he had was coccydinia and having insisted on a 2nd opinion when he was told by GP he didn't have Parkinson's, which he does, I never take anything as gospel and like to do my own checking.